How to appeal a Humana inpatient rehab — irf / snf / ltac admission and length-of-stay denial

The framework that applies to your appeal

Medicare Advantage plans follow a separate appeal track from commercial plans. Reconsideration must be requested within 60 days; if the plan misses its deadline, the case auto-forwards to the IRE (Maximus).

Humana-specific note: Heavily Medicare Advantage focused. MA-specific appeal track (42 CFR Part 422 Subpart M) applies — 60 days to request reconsideration, NOT the 180 days for commercial plans. Auto-forward to IRE (Maximus) if Humana misses deadline.

What Humana's policy requires for inpatient rehab — irf / snf / ltac admission and length-of-stay

Cited policy: Humana Medicare Advantage IRF Coverage — defers to CMS 42 CFR §412.622 + §412.29 + IRF-PAI quality measures; bound by CMS-4201-F (Apr 2023) MA Final Rule

Continued IRF stay supported by ongoing functional improvement (Section GG / FIM serial scores) OR documented Jimmo maintenance need; ongoing therapy tolerance >=3 hr/day; ongoing physiatrist supervision; appropriate discharge plan in development. CMS expected length of stay varies by impairment group (12-22 days typical).

How Humana denies inpatient rehab — irf / snf / ltac admission and length-of-stay — and how to counter it

Where Humana pushes back: 1) 'Patient has reached functional plateau'; 2) 'Lower level of care now appropriate'; 3) 'Discharge readiness reached'; 4) 'No measurable improvement in past 48-72 hr'.

Counter-arguments that hold up: Cite Jimmo v. Sebelius — improvement is NOT required for continued coverage. Submit interim Section GG / FIM scores showing continued gain (even small deltas) OR document maintenance medical necessity (e.g., complexity of dysphagia management, vestibular/balance retraining, adaptive equipment training, return-to-driving evaluation). Document discharge-plan barriers (caregiver training incomplete, home safety eval pending, DME not delivered, transport for outpatient therapy unresolved). Cite CMS-4201-F MA Final Rule and Senate Finance Committee report on MA post-acute denials. CMS expected LOS data for impairment group (RIC) supports ongoing stay.

What Humana typically denies for inpatient rehab — irf / snf / ltac admission and length-of-stay

Across Humana's commercial and Medicare books, denials cluster around a small number of patterns. For inpatient rehab — irf / snf / ltac admission and length-of-stay, expect:

• MA plan step therapy on Part B drugs
• Skilled nursing facility days
• Prior auth on specialty drugs
• OON emergency reduction

Treatments most often denied in this category

These are the inpatient rehab — irf / snf / ltac admission and length-of-stay treatments most often flagged for prior auth, step therapy, or medical necessity review:

• IRF admission
• IRF length-of-stay
• SNF admission
• SNF length-of-stay
• LTAC admission
• LTAC length-of-stay

How to submit the appeal to Humana

1. Read the denial letter — note the exact denial reason code and the appeal deadline (60 days from the date on the letter).
2. Gather supporting documentation: physician letter of medical necessity, relevant clinical notes, peer-reviewed citations supporting the treatment for your indication, and the policy or coverage document Humana cited in the denial.
3. File the appeal through Humana's portal (members: https://www.humana.com ; providers: https://www.humana.com/provider). Standard decision returns within 30 days; expedited urgent appeals return within 72 hours.
4. If denied again, request external review by an independent reviewer within 4 months of the final internal denial. In KY, the state insurance department coordinates external review for fully-insured plans; ERISA self-funded plans use a federal external review through DOL/EBSA.

Clinician or prior-auth team handling this on the practice side? See Humana's prior-authorization criteria by drug: Humana PA criteria on ApprovalHelp.